Rayleigh-Benard oscillatory natural convection of liquid gallium heated from below

Yoji Yamanaka; Koichi Kakimoto; Hiroyuki Ozoe; Stuart W. Churchill

doi:10.1016/S1385-8947(98)00100-4

Rayleigh-Benard oscillatory natural convection of liquid gallium heated from below

Yoji Yamanaka, Koichi Kakimoto, Hiroyuki Ozoe, Stuart W. Churchill

Division of Renewable Energy Dynamics

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

The average rate of heat transfer as well as the oscillatory span-widths of the Nusselt number and the Rayleigh number were measured for natural convection in a layer of liquid gallium (Pr = 0.023) heated from below electrically and cooled from above with running water. These quantities were determined by measuring the instantaneous temperature difference between the upper and lower horizontal copper plates. The time-averaged Nusselt number agreed well with the previous data of Rossby for mercury (Pr = 0.025), at comparable values of the Rayleigh number. The oscillations are a consequence of reduced viscous damping for a fluid with low Prandtl number.

Original language	English
Pages (from-to)	201-205
Number of pages	5
Journal	Chemical Engineering Journal
Volume	71
Issue number	3
DOIs	https://doi.org/10.1016/S1385-8947(98)00100-4
Publication status	Published - Dec 18 1998

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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10.1016/S1385-8947(98)00100-4

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abstract = "The average rate of heat transfer as well as the oscillatory span-widths of the Nusselt number and the Rayleigh number were measured for natural convection in a layer of liquid gallium (Pr = 0.023) heated from below electrically and cooled from above with running water. These quantities were determined by measuring the instantaneous temperature difference between the upper and lower horizontal copper plates. The time-averaged Nusselt number agreed well with the previous data of Rossby for mercury (Pr = 0.025), at comparable values of the Rayleigh number. The oscillations are a consequence of reduced viscous damping for a fluid with low Prandtl number.",

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AU - Yamanaka, Yoji

AU - Kakimoto, Koichi

AU - Ozoe, Hiroyuki

AU - Churchill, Stuart W.

PY - 1998/12/18

Y1 - 1998/12/18

N2 - The average rate of heat transfer as well as the oscillatory span-widths of the Nusselt number and the Rayleigh number were measured for natural convection in a layer of liquid gallium (Pr = 0.023) heated from below electrically and cooled from above with running water. These quantities were determined by measuring the instantaneous temperature difference between the upper and lower horizontal copper plates. The time-averaged Nusselt number agreed well with the previous data of Rossby for mercury (Pr = 0.025), at comparable values of the Rayleigh number. The oscillations are a consequence of reduced viscous damping for a fluid with low Prandtl number.

AB - The average rate of heat transfer as well as the oscillatory span-widths of the Nusselt number and the Rayleigh number were measured for natural convection in a layer of liquid gallium (Pr = 0.023) heated from below electrically and cooled from above with running water. These quantities were determined by measuring the instantaneous temperature difference between the upper and lower horizontal copper plates. The time-averaged Nusselt number agreed well with the previous data of Rossby for mercury (Pr = 0.025), at comparable values of the Rayleigh number. The oscillations are a consequence of reduced viscous damping for a fluid with low Prandtl number.

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Rayleigh-Benard oscillatory natural convection of liquid gallium heated from below

Abstract

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